usb-modeswitch: add usb-modeswitch@.service

This service is essential for making hotplugging work correctly on a
systemd system. Without it, USB devices get recognized by systemd
instead of the usb-modeswitch udev rule, so hotplugging breaks. Once the
service is added, hotplugging works properly again.

Signed-off-by: Martin Kelly <mkelly@xevo.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-support/usb-modeswitch/usb-modeswitch_2.5.0.bb

@@ -8,7 +8,9 @@ SRC_URI = "http://www.draisberghof.de/usb_modeswitch/${BP}.tar.bz2"
 SRC_URI[md5sum] = "38ad5c9d70e06227a00361bdc2b1e568"
 SRC_URI[sha256sum] = "31c0be280d49a99ec3dc0be3325bef320d9c04b50714ef0ce1e36a614d687633"
 
-inherit pkgconfig
+inherit pkgconfig systemd
+
+SYSTEMD_SERVICE_${PN} = "usb_modeswitch@.service"
 
 EXTRA_OEMAKE = "TCL=${bindir}/tclsh"
 
@@ -18,4 +20,8 @@ RRECOMMENDS_${PN} = "usb-modeswitch-data"
 
 do_install() {
     oe_runmake DESTDIR=${D} install
+    if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then
+        install -d ${D}/${systemd_unitdir}/system
+        install -m 644 ${S}/usb_modeswitch@.service ${D}/${systemd_unitdir}/system
+    fi
 }